Here's another illustration of "Fix issue #2 with v4 and p6 upgrades":
https://git.io/georet which concerns comparative geometric mean returns.

Notice how the import cell precedes the preamble cell in the notebook.

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Git shell script to list commit dates, given path/filename(s)

The system's modification time for a committed file may not
be the actual commit date and time! This can be verified
if you checkout an older branch and switch back.

There is no nice builtin git utility, so I wrote one: https://git.io/git-lu
and it supports wildcards and shows the short SHA hash ref.

Now we can clearly see which notebooks are actually still pre-2016:

2014-12-07 12:02:38 -0800  362d82c  fred-wage-capital.ipynb
2015-01-17 13:38:57 -0800  1530474  fred-debt-pop.ipynb
2015-01-23 22:46:21 -0800  478e51d  fred-usd-RTB-xau.ipynb
2015-02-03 13:26:13 -0800  2c9b5c2  fred-inflation.ipynb
2015-02-06 08:28:54 -0800  5586678  fred-eurozone.ipynb
2015-03-08 19:15:09 -0700  1d54341  fred-xau-spx.ipynb
2015-05-15 15:29:14 -0700  65f5b40  fred-infl-velocity.ipynb
2015-05-20 11:33:26 -0700  e1f50e1  fred-eur-fx.ipynb

P.S. -- git does not internally keep a record of modification times,
just the author date and commit date.

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TODO List

• fred-wage-capital.ipynb
• fred-debt-pop.ipynb
• fred-usd-RTB-xau.ipynb
• fred-inflation.ipynb
• fred-eurozone.ipynb
• fred-xau-spx.ipynb
• fred-infl-velocity.ipynb
• fred-eur-fx.ipynb

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Fixed fred-inflation.ipynb, but there's more notebooks to revise. Reopen issue.

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CHANGELOG 2018-06-23 (tag: v6.18.0623)

Major version change for fecon235 from v5 to v6
signaling our integration with fecon236
which was spun-off from our source code.

Henceforth, fecon235 becomes a repository solely of Jupyter notebooks.
The old Python source code at fecon235 will remain for archival purposes,
while new code development shifts over to fecon236.
Please see https://git.io/econ for details.

Revise docs/fecon235-00-README.ipynb to introduce fecon236.
Function names have been retained, but under fecon236
the call routing is expected to be more explicit than casual,
i.e. modules names are more significant.
Please see https://git.io/fecon-intro

Recommended import style

import fecon236 as fe

Function names have been retained, but under fecon236, expect infrequent function calls to be explicit rather than implicit, i.e. modules names and their aliases are significant.

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